Band stamp



M.-L. WILLARD.

BAND STAMP.

APPLICATION Fl L ED MAR. 25, 1921. 1,405,81 1. A Patented Feb. 7, 1922-.

UNITED STATES PATENT OFFICE.

MAURICE L. WILLARD, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE SUPERIOR TYPE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BAND STAMP.

Application filed March 25, 1921.

To aZZ whom it may concern:

Be it known that I, MAURICE L. WILLARD, a citizen of the United States, residin at Chicago, in the county of Cook and S of Illinois, have invented certain new and useful Improvements in Band Stamps, of which the following is a specification.

This invention relates to a new and improved roll for rubber stamps of the band type, and further to a method of making such rolls.

Stamps of the band type comprise a frame in which is retained a pivot pin upon which one or more rolls are carried. A bridge extends across the lower end of the frame and a band is carried by each roll extending around the roll and around the outside portion of the bridge. The rolls comprise a radial flange by means of which theroll is actuated and an axial flange carrying the bands. As at present constructed, these rolls are formed of a plurality of parts. The radial flange is usually formed or" metal celluloid or other suitable material, and the axial flange or band carrying member has generally been formed of a disk of Wood, cork, or similar material, attached in various manners to the metal flange. In certain instances these axial flanges have been formed of a separate piece, or pieces, of metal and then connected to the radial flange by various methods. I

It is extremely important in the use and operation of these stamps that the band carrying portions of the rolls be concentric with the pin upon which they rotate in order that the band may be put under uniform tension and may be freely movable by rotation of the roll. Where the roll is eccentric, in certain positions it will unduly stretch the band and put it under excessive tension, while in other positions it may not engage the band with suflicient force to cause it to move. Such conditions not only cause undue wear and deterioration of the band, but render it difiicult to change the printing portion of the band by the proper manipulation of the radial flanges. This latter result often requires movement of the inky bands by grasping them with the fingers, which is undesirable.

Articles of this character are manufac- Specification of Letters Patent.

Patented Feb. 7, 1922.

Serial No. 455,384.

tured in large quantities and at relatively low cost, and any device to be practical for use therein must be relatively inexpensive terial, in which the roll carrying flange is,

adequately supported from the hub, and which are readily adapted for quantity production in automatic machines. Other and further objects will appear as the description proceeds.

Broadly stated, my roll comprises a disk which forms the radial or actuating flange and a tubular hub extending laterally from the center thereof, this hub being enclosed by a band holding flange concentric therewith. This roll is preferably formed from a rod of suitable material, with its outer surface knurled or roughened to provide a gripping contact, by first cutting away the rod to form a reduced portion on its end equal in length to the desired width of the axial band flange; then knurling or roughening said reduced portion; then cutting away the interior of said reduced portion to form a tubular hub concentric therewith; and, lastly, cutting away a short section of the rod with the axial flange and hub connected thereto. This method of making my improved roll may be conveniently practised by using an automatic screw machine.

I have illustrated a preferred embodiment of my invention in the accompanying drawings, in which Figure l is a view of the roll-forming rod after it has been knurled or roughened to provide a finger grip;

Figure 2 is a view of the rod of Figure 1, showing its end portion cut away to form the axial roll flange;

Figure 3 is a view similar to Figure 2, showing the roll flange knurled;

Figure 4 is a view similar to Figure 3, partly in cross section, showing the formation of the hub;

Figure 5 is a view similar to Figure 3, showing the completed roll out from the rod;

Figure 6 is a perspective view of the completed roll;

Figure 7 is an elevation showing a dating stamp using the rolls; and

Figure 8 is a vertical section through the device of Figure 7; I

As shown 1n Figures 1 to 6, the blank 9 hasits' outer surface knurled or roughened and its end portion cut away to form the band carrying flange 10. As best shown in Figures 1 and 6, the band carrying flange 10 is inwardly cut away to form a tubular hub 11. The fillet of material 12 may, if desired, be left between the hub ll and flange 1O adj acent the radial flange 13. As shown in Fig ures 7 and 8, one or more of these rolls 14 of varying length is mounted upon the pin 15 retained in the frame 16. The lower end of the frame is closed by the bridge 17 and the rubber type carrying bands 18 each pass about the flange 10 of a roll 14: and about the adjacent portion of the bridge 17.

In the formation of my'rolls by the preferable method, a blank rod 9, as shown in Figure 1, preferably formed of an aluminum alloy or similar light and easily worked material, has its outer surface preferably knurled or roughened to provide good gripping contact. Its end is then cut away for a predetermined distance to form a cylindrical band receiving flange 10 as shown in Figure 2. The portion 10 is next knurled or roughened, as shown in Figure 3. The next operation consists in the cutting away of the major portion of the material retained within the flange 10 to form this flange as a relatively thin piece of metal and to form the hub 11 concentric therewith. The cut within the hub is carried to a depth greater than that of the flange 10, so as to extend entirely through the roll when out from the blank. The completed roll is then cut from the end of the blank 9 by a transverse cut made to leave a radial flange 13 of the desired thickness, as shown in Figure 5.

As shown. in Figures 7 and 8, the roll carrying flanges are made of varying width in order to properly support bands containing varying numbers of type characters as occasion demands. T

The roll formed by this operation comprises a unitary structure in which the band carrying roll is concentric with the roll hub,

type carrying bands. The process described may be carried out upon automatic machinery at great speed and with relatively low cost, so that the device is commercially practicable. The knurled or roughened band carrying roll secures an adequate grip upon the bands and positively turns them when desired, and there is no danger of the roll becoming disengaged or separated from the supporting flange.

I claim:

1. The method of forming rolls for band printing stamps and the like, comprising cutting the end of a rod of the diameter of the roll flange to form a portion upon the end thereof of the length and diameter of the desired roll portion concentric with the rod, cutting out the interior of said reduced portion to reduce the weight of the roll, and lastly cutting from the rod the reduced end portion and a relatively narrow section of the full size of the rod.

2. The method of forming rolls for band. stamps and the like, comprising knurling and roughening the surface of a rod of'the diameter of the radial roll flange, cutting an end of said rod of the desired length down to the diameter desired for the roll, knurling or roughening said reduced portion, cutting out the interior of said reduced portion to leave an axial roll flange and a tubular hub concentric therewith, andlastly cutting from the rod the reduced end portion and a relatively narrow section of the full size of the rod. 7

3. The method of forming rolls for band stamps and the like, comprising knurlingor rouglienlng the surface of a rod of the diameterof the radial roll flange, cutting an end of said rod of the desired length down to the diameter desired for the roll, knurling or and thus a uniform tension is impartedto the roughening said reduced portion, cutting out the interior of said reduced portion to reduce the weight of the roll, and lastly cut:

ting from the'rod the reduced end portion and a relatively narrow section to the full size of the rod.

Signed at Chicago, Illinois, this 22nd day of March, 1921.

MAURICE L. IVILLARD. 

